It could be that several threads were posted on the same topic and merged into one, which would cause the link for one or more of the threads to be inoperable. I know for a fact that this happened with the Pro Pet Vitamin recall thread; several people started threads on the same thing. If you get an inoperable link, just sign in at the forum and check the Recall board for new posts.
(Another reason for those posting recall info to make sure to check that it's not already posted before starting a new thread. I warn you, menusux is fast at getting these up.

)